Noun. 1. synergy-the working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects. synergism.
Cayenne pepper cranks the sauce up to 800 Scoville units of heat compared to Taco Bell's Fire Sauce at 500 Scoville units, which makes this the hottest stuff you can get at the chain. Now, with this secret formula, you can adjust the heat up or down to your preference just by playing with the amount of cayenne you add.
Sales erupted at Taco Bell when the chain introduced the new Volcano Taco in September 2008. A red corn tortilla shell filled with standard taco ingredients including spiced ground beef, lettuce, and cheese, is topped with a super-spicy cheese-based secret ingredient called Lava Sauce that makes this product one of the chain's most successful new menu items.